ArrhinoceratopsvsProtohadros
Protohadros has a higher Latest Appearance (94 vs 67 Ma), while Protohadros has a higher Temporal Midpoint (97 vs 70 Ma), while Protohadros has a higher Earliest Appearance (99 vs 72 Ma).
Physical Characteristics
6
Length
6
N/A
Weight
N/A
herbivorous
Diet
herbivorous
Classification
ceratopsian
Type
large ornithopod
Temporal Range
Late Cretaceous
Era
Late Cretaceous
72
Earliest Appearance
99
67
Latest Appearance
94
5
Time Span
5
70
Temporal Midpoint
97
Discovery
1,925
Year Discovered
1,998
Canada
Discovery Location
USA
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Data sourced from World Dinosaur Dataset (Zenodo) (CC-BY 4.0).